Translational bridge arch frame

Abstract

The invention discloses a translational bridge arch frame, comprising skewbacks on two ends and an arch frame body between the two skewbacks, and a support base under the skewbacks. The top surface of the support base is provided with a straight sliding rail. The bottom surface of the skewback is provided with a sliding plate cooperated with the straight sliding rail. The support base is fixedly provided with a traction device used to drive the skewback to move along the straight sliding rail, and a position locking mechanism used to lock the positions of the skewback is also arranged between the support base and the skewback. Through arranging the support base under the skewback, and arranging the straight sliding rail and the sliding plate between the support base and the skewback, the skewbacks of the translational bridge arch frame can be driven to move horizontally by the traction device. Thus, the arch frame can be driven to move horizontally along the straight sliding rails, and just one arch frame is needed, and construction requirements of relatively wide bridge can be realized, and the arch frame is just built once, thereby effectively saving manpower and shortening engineering construction period.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a translational bridge arch frame. Background technique [0002] In the construction of masonry arch bridges such as stone arch bridges and prefabricated concrete blocks, it is necessary to set up a relatively strong support at the bridge position, and then build blocks on it. This support is called an arch frame. The advantages of using arch construction are: the construction cost is low, and it is often used in the construction of arch bridges with small heights under the bridge. [0003] Existing arch frames are generally fixedly installed on the abutments. If the width of the bridge is wide or it is a two-way double-track bridge, only a single arch frame cannot meet the construction requirements of the bridge. Therefore, the existing bridge construction In the method, the arches need to be dismantled and then re-erected at the adjacent set positions, ...

AI Technical Summary

Problems solved by technology

[0003] Existing arch frames are generally fixedly installed on the abutments. If the width of the bridge is wide or it is a two-way double-track bridge, only a single arch frame cannot meet the construction requirements of the bridge. Therefore, the existing bridge construction In the method, it is necessary to dismantle the arch frame and then re-erect the arch frame at the adjacent set position, or directly use two or more arch frames to complete the construction work of the bridge

The method of dismantling and re-erecting the arch leads to a lot of waste of manpower, and the method of using multiple arches also increases the cost of making and erecting the arch

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